示例#1
0
  public YesNoCancelDialog(Frame parent, String title, String msg) {
    super(parent, title, true);
    setLayout(new BorderLayout());
    Panel panel = new Panel();
    panel.setLayout(new FlowLayout(FlowLayout.LEFT, 10, 10));
    MultiLineLabel message = new MultiLineLabel(msg);
    message.setFont(new Font("Dialog", Font.PLAIN, 12));
    panel.add(message);
    add("North", panel);

    panel = new Panel();
    panel.setLayout(new FlowLayout(FlowLayout.RIGHT, 15, 8));
    if (IJ.isMacintosh() && msg.startsWith("Save")) {
      yesB = new Button("  Save  ");
      noB = new Button("Don't Save");
      cancelB = new Button("  Cancel  ");
    } else {
      yesB = new Button("  Yes  ");
      noB = new Button("  No  ");
      cancelB = new Button(" Cancel ");
    }
    yesB.addActionListener(this);
    noB.addActionListener(this);
    cancelB.addActionListener(this);
    yesB.addKeyListener(this);
    noB.addKeyListener(this);
    cancelB.addKeyListener(this);
    if (IJ.isMacintosh()) {
      panel.add(noB);
      panel.add(cancelB);
      panel.add(yesB);
      setResizable(false);
    } else {
      panel.add(yesB);
      panel.add(noB);
      panel.add(cancelB);
    }
    add("South", panel);
    pack();
    GUI.center(this);
    show();
  }
示例#2
0
  /** Create the whole GUI, and set up event listeners */
  public AllComponents(String title) {
    super(title); // set frame title.

    // Arrange to detect window close events
    this.addWindowListener(
        new WindowAdapter() {
          public void windowClosing(WindowEvent e) {
            System.exit(0);
          }
        });

    // Set a default font
    this.setFont(new Font("SansSerif", Font.PLAIN, 12));

    // Create the menubar.  Tell the frame about it.
    MenuBar menubar = new MenuBar();
    this.setMenuBar(menubar);

    // Create the file menu.  Add to menubar.
    Menu file = new Menu("File");
    menubar.add(file);

    // Create two items for the file menu, setting their label, shortcut,
    // action command and listener.  Add them to File menu.
    // Note that we use the frame itself as the action listener
    MenuItem open = new MenuItem("Open", new MenuShortcut(KeyEvent.VK_O));
    open.setActionCommand("open");
    open.addActionListener(this);
    file.add(open);
    MenuItem quit = new MenuItem("Quit", new MenuShortcut(KeyEvent.VK_Q));
    quit.setActionCommand("quit");
    quit.addActionListener(this);
    file.add(quit);

    // Create Help menu; add an item; add to menubar
    // Display the help menu in a special reserved place.
    Menu help = new Menu("Help");
    menubar.add(help);
    menubar.setHelpMenu(help);

    // Create and add an item to the Help menu
    MenuItem about = new MenuItem("About", new MenuShortcut(KeyEvent.VK_A));
    about.setActionCommand("about");
    about.addActionListener(this);
    help.add(about);

    // Now that we've done the menu, we can begin work on the contents of
    // the frame.  Assign a BorderLayout manager with margins for this frame.
    this.setLayout(new BorderLayout(10, 10));

    // Create two panels to contain two columns of components.  Use our custom
    // ColumnLayout layout manager for each.  Add them on the west and
    // center of the frame's border layout
    Panel column1 = new Panel();
    column1.setLayout(new ColumnLayout(5, 10, 2, ColumnLayout.LEFT));
    this.add(column1, "West");
    Panel column2 = new Panel();
    column2.setLayout(new ColumnLayout(5, 10, 2, ColumnLayout.LEFT));
    this.add(column2, "Center");

    // Create a panel to contain the buttons at the bottom of the window
    // Give it a FlowLayout layout manager, and add it along the south border
    Panel buttonbox = new Panel();
    buttonbox.setLayout(new FlowLayout(FlowLayout.CENTER, 100, 10));
    this.add(buttonbox, "South");

    // Create pushbuttons and add them to the buttonbox
    Button okay = new Button("Okay");
    Button cancel = new Button("Cancel");
    buttonbox.add(okay);
    buttonbox.add(cancel);

    // Handle events on the buttons
    ActionListener buttonlistener =
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            textarea.append("You clicked: " + ((Button) e.getSource()).getLabel() + "\n");
          }
        };
    okay.addActionListener(buttonlistener);
    cancel.addActionListener(buttonlistener);

    // Now start filling the left column.
    // Create a 1-line text field and add to left column, with a label
    TextField textfield = new TextField(15);
    column1.add(new Label("Name:"));
    column1.add(textfield);

    // Handle events on the TextField
    textfield.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            textarea.append("Your name is: " + ((TextField) e.getSource()).getText() + "\n");
          }
        });
    textfield.addTextListener(
        new TextListener() {
          public void textValueChanged(TextEvent e) {
            textarea.append("You have typed: " + ((TextField) e.getSource()).getText() + "\n");
          }
        });

    // Create a dropdown list or option menu of choices
    Choice choice = new Choice();
    choice.addItem("red");
    choice.addItem("green");
    choice.addItem("blue");
    column1.add(new Label("Favorite color:"));
    column1.add(choice);

    // Handle events on this choice
    choice.addItemListener(
        new ItemListener() {
          public void itemStateChanged(ItemEvent e) {
            textarea.append("Your favorite color is: " + e.getItem() + "\n");
          }
        });

    // Create checkboxes, and group them in a CheckboxGroup to give them
    // "radio button" behavior.
    CheckboxGroup checkbox_group = new CheckboxGroup();
    Checkbox[] checkboxes = new Checkbox[3];
    checkboxes[0] = new Checkbox("vanilla", checkbox_group, false);
    checkboxes[1] = new Checkbox("chocolate", checkbox_group, true);
    checkboxes[2] = new Checkbox("strawberry", checkbox_group, false);
    column1.add(new Label("Favorite flavor:"));
    for (int i = 0; i < checkboxes.length; i++) column1.add(checkboxes[i]);

    // Handle events on the checkboxes
    ItemListener checkbox_listener =
        new ItemListener() {
          public void itemStateChanged(ItemEvent e) {
            textarea.append(
                "Your favorite flavor is: " + ((Checkbox) e.getItemSelectable()).getLabel() + "\n");
          }
        };
    for (int i = 0; i < checkboxes.length; i++) checkboxes[i].addItemListener(checkbox_listener);

    // Create a list of choices.
    List list = new List(4, true);
    list.addItem("Java");
    list.addItem("C");
    list.addItem("C++");
    list.addItem("Smalltalk");
    list.addItem("Lisp");
    list.addItem("Modula-3");
    list.addItem("Forth");
    column1.add(new Label("Favorite languages:"));
    column1.add(list);
    // Handle events on this list
    list.addItemListener(
        new ItemListener() {
          public void itemStateChanged(ItemEvent e) {
            textarea.append("Your favorite languages are: ");
            String[] languages = ((List) e.getItemSelectable()).getSelectedItems();
            for (int i = 0; i < languages.length; i++) {
              if (i > 0) textarea.append(",");
              textarea.append(languages[i]);
            }
            textarea.append("\n");
          }
        });

    // Create a multi-line text area in column 2
    textarea = new TextArea(6, 40);
    textarea.setEditable(false);
    column2.add(new Label("Messages"));
    column2.add(textarea);

    // Create a scrollpane that displays portions of a larger component
    ScrollPane scrollpane = new ScrollPane();
    scrollpane.setSize(300, 150);
    column2.add(new Label("Scrolling Window"));
    column2.add(scrollpane);

    // Create a custom MultiLineLabel with a really big font and make it
    // a child of the ScrollPane container
    String message =
        "/*************************************************\n"
            + " * AllComponents.java                            *\n"
            + " * Written by David Flanagan                     *\n"
            + " * Copyright (c) 1997 by O'Reilly & Associates   *\n"
            + " *                                               *\n"
            + " *************************************************/\n";
    MultiLineLabel biglabel = new MultiLineLabel(message);
    biglabel.setFont(new Font("Monospaced", Font.BOLD + Font.ITALIC, 24));
    scrollpane.add(biglabel);
  }